One of the reasons we chose the FLEX (besides its upscale looks and its overall performance) is that it was one of the few midsize vehicles that could tow a 3,500 pound popup camper (it tows up to 4,500 points). I currently use a 2000 Ford Expedition that can easily tow this, but its not a vehicle that is comfortable (or cheap at 12mpg) to drive long distances. Plus, I'm getting spoiled in my old age and like all the bells and whistles of the LIMITED version of the Flex, Navigation-Sync system, Sirius, Rear DVD for the kids, etc.
If you do get the optional tow package as a factory option, you probably know that the FLEX comes PRE-WIRED for both the 4-pin and 7-pin trailer electrical connection. What you may not know is that it also comes PRE-WIRED for an electronic brake controller for your trailer! There is an (unconnected) connecter underneath the driver's side dash which is used for this purpose. If you put your head in the footwell next to the brake pedal and look up into the guts under the dash, you'll find the unconnected electrical connector close to the diagnostic connector for the car.
What you need to do is buy any appropriate electronic brake controller (there are many out there) -AND- the "pigtail" (the opposite connector with wires coming out of it) from FORD parts department for this purpose. This pigtail is something like $16.50 USD plus tax. Then, either you or the FORD SERVICE department connects the ends of the brake controller to the pigtail and physically attaches the brake controller to the bottom of your dash. This without running any new wires!
I know this because FORD has been very intelligent about this for a while. My 2000 Ford Expedition was pre-wired in this fashion as well. When I was looking at the FLEX, I looked under the dash to confirm when I read it was all pre-wired as part of the factory installed, optional tow package.
Its the "little things" and the thought that has gone into this vehicle that makes it so impressive.
Edited by bhinkston, 07 March 2009 - 07:51 PM.